The limit is the size of her head. No breast should have be larger than the head it is attached to, IMHO. I actually prefer breasts even smaller, where both about no larger than her head but I have some flexiblity! Your mileage will vary.

-very POOR examples
-could have easily gone higher
-creator is not knowledged in larger oppai, obviously
-further proof that anime helps spread false knowledge about cup and bust sizes
-terrible annoying music annoys. I feel I've heard the song a million times before, even though I know I haven't

should be deleted from the internets, put onto blu ray, and the bluray disc should then be thrown into mt. fuji /10

It continues to leave me awestruck that with tastes like these, that more 3D girls aren't getting love from you otaku. Those boobs exist in plentiful amounts in real life, people! You're the lucky ones! Go, frolic among the fields of moderately sized oppai! Go be normal... you lucky bastards ;_;

You don't have an Option for "Both"... T_T I love REALLY Big, or REALLY Small Boobs... Loli, or Boing-Boing. Either is fine, but in the Middle is just... annoying... Not a Loli, and not Busty... So just pretend I voted for them both... =\ Lol.

I love all sorts of sizes, from the Kojika girls to Sekirei types. Bizzare perhaps, but I can appreciate petanko and kyounyuu just as much as the other one.
And yeah, where where the Sekirei girls in there ;)